// Simple Set Clipboard System
// Author: Joseph Huckaby

var ZeroClipboard = {
        
        version: "1.0.7",
        clients: {}, // registered upload clients on page, indexed by id
        moviePath: 'ZeroClipboard.swf', // URL to movie
        nextId: 1, // ID of next movie
        
        $: function(thingy) {
                // simple DOM lookup utility function
                if (typeof(thingy) == 'string') thingy = document.getElementById(thingy);
                if (!thingy.addClass) {
                        // extend element with a few useful methods
                        thingy.hide = function() { this.style.display = 'none'; };
                        thingy.show = function() { this.style.display = ''; };
                        thingy.addClass = function(name) { this.removeClass(name); this.className += ' ' + name; };
                        thingy.removeClass = function(name) {
                                var classes = this.className.split(/\s+/);
                                var idx = -1;
                                for (var k = 0; k < classes.length; k++) {
                                        if (classes[k] == name) { idx = k; k = classes.length; }
                                }
                                if (idx > -1) {
                                        classes.splice( idx, 1 );
                                        this.className = classes.join(' ');
                                }
                                return this;
                        };
                        thingy.hasClass = function(name) {
                                return !!this.className.match( new RegExp("\\s*" + name + "\\s*") );
                        };
                }
                return thingy;
        },
        
        setMoviePath: function(path) {
                // set path to ZeroClipboard.swf
                this.moviePath = path;
        },
        
        dispatch: function(id, eventName, args) {
                // receive event from flash movie, send to client               
                var client = this.clients[id];
                if (client) {
                        client.receiveEvent(eventName, args);
                }
        },
        
        register: function(id, client) {
                // register new client to receive events
                this.clients[id] = client;
        },
        
        getDOMObjectPosition: function(obj, stopObj) {
                // get absolute coordinates for dom element
                var info = {
                        left: 0, 
                        top: 0, 
                        width: obj.width ? obj.width : obj.offsetWidth, 
                        height: obj.height ? obj.height : obj.offsetHeight
                };

                while (obj && (obj != stopObj)) {
                        info.left += obj.offsetLeft;
                        info.top += obj.offsetTop;
                        obj = obj.offsetParent;
                }

                return info;
        },
        
        Client: function(elem) {
                // constructor for new simple upload client
                this.handlers = {};
                
                // unique ID
                this.id = ZeroClipboard.nextId++;
                this.movieId = 'ZeroClipboardMovie_' + this.id;
                
                // register client with singleton to receive flash events
                ZeroClipboard.register(this.id, this);
                
                // create movie
                if (elem) this.glue(elem);
        }
};

ZeroClipboard.Client.prototype = {
        
        id: 0, // unique ID for us
        ready: false, // whether movie is ready to receive events or not
        movie: null, // reference to movie object
        clipText: '', // text to copy to clipboard
        handCursorEnabled: true, // whether to show hand cursor, or default pointer cursor
        cssEffects: true, // enable CSS mouse effects on dom container
        handlers: null, // user event handlers
        
        glue: function(elem, appendElem, stylesToAdd) {
                // glue to DOM element
                // elem can be ID or actual DOM element object
                this.domElement = ZeroClipboard.$(elem);
                
                // float just above object, or zIndex 99 if dom element isn't set
		// auto z-index using jquery
                var zIndex = $(elem).parent().css('z-index')+1;
                if (this.domElement.style.zIndex) {
                        zIndex = parseInt(this.domElement.style.zIndex, 10) + 1;
                }
                
                if (typeof(appendElem) == 'string') {
                        appendElem = ZeroClipboard.$(appendElem);
                }
                else if (typeof(appendElem) == 'undefined') {
                        appendElem = document.getElementsByTagName('body')[0];
                }
                
                // find X/Y position of domElement
                var box = ZeroClipboard.getDOMObjectPosition(this.domElement, appendElem);
                
                // create floating DIV above element
                this.div = document.createElement('div');
                var style = this.div.style;
                style.position = 'absolute';
                style.left = '' + box.left + 'px';
                style.top = '' + box.top + 'px';
                style.width = '' + box.width + 'px';
                style.height = '' + box.height + 'px';
                style.zIndex = zIndex;
                
                if (typeof(stylesToAdd) == 'object') {
                        for (addedStyle in stylesToAdd) {
                                style[addedStyle] = stylesToAdd[addedStyle];
                        }
                }
                
                // style.backgroundColor = '#f00'; // debug
                
                appendElem.appendChild(this.div);
                
                this.div.innerHTML = this.getHTML( box.width, box.height );
        },
        
        getHTML: function(width, height) {
                // return HTML for movie
                var html = '';
                var flashvars = 'id=' + this.id + 
                        '&width=' + width + 
                        '&height=' + height;
                        
                if (navigator.userAgent.match(/MSIE/)) {
                        // IE gets an OBJECT tag
                        var protocol = location.href.match(/^https/i) ? 'https://' : 'http://';
                        html += '<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="'+protocol+'download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,0,0" width="'+width+'" height="'+height+'" id="'+this.movieId+'" align="middle"><param name="allowScriptAccess" value="always" /><param name="allowFullScreen" value="false" /><param name="movie" value="'+ZeroClipboard.moviePath+'" /><param name="loop" value="false" /><param name="menu" value="false" /><param name="quality" value="best" /><param name="bgcolor" value="#ffffff" /><param name="flashvars" value="'+flashvars+'"/><param name="wmode" value="transparent"/></object>';
                }
                else {
                        // all other browsers get an EMBED tag
                        html += '<embed id="'+this.movieId+'" src="'+ZeroClipboard.moviePath+'" loop="false" menu="false" quality="best" bgcolor="#ffffff" width="'+width+'" height="'+height+'" name="'+this.movieId+'" align="middle" allowScriptAccess="always" allowFullScreen="false" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" flashvars="'+flashvars+'" wmode="transparent" />';
                }
                return html;
        },
        
        hide: function() {
                // temporarily hide floater offscreen
                if (this.div) {
                        this.div.style.left = '-2000px';
                }
        },
        
        show: function() {
                // show ourselves after a call to hide()
                this.reposition();
        },
        
        destroy: function() {
                // destroy control and floater
                if (this.domElement && this.div) {
                        this.hide();
                        this.div.innerHTML = '';
                        
                        var body = document.getElementsByTagName('body')[0];
                        try { body.removeChild( this.div ); } catch(e) {;}
                        
                        this.domElement = null;
                        this.div = null;
                }
        },
        
        reposition: function(elem) {
                // reposition our floating div, optionally to new container
                // warning: container CANNOT change size, only position
                if (elem) {
                        this.domElement = ZeroClipboard.$(elem);
                        if (!this.domElement) this.hide();
                }
                
                if (this.domElement && this.div) {
                        var box = ZeroClipboard.getDOMObjectPosition(this.domElement);
                        var style = this.div.style;
                        style.left = '' + box.left + 'px';
                        style.top = '' + box.top + 'px';
                }
        },
        
        setText: function(newText) {
                // set text to be copied to clipboard
                this.clipText = newText;
                if (this.ready) this.movie.setText(newText);
        },
        
        addEventListener: function(eventName, func) {
                // add user event listener for event
                // event types: load, queueStart, fileStart, fileComplete, queueComplete, progress, error, cancel
                eventName = eventName.toString().toLowerCase().replace(/^on/, '');
                if (!this.handlers[eventName]) this.handlers[eventName] = [];
                this.handlers[eventName].push(func);
        },
        
        setHandCursor: function(enabled) {
                // enable hand cursor (true), or default arrow cursor (false)
                this.handCursorEnabled = enabled;
                if (this.ready) this.movie.setHandCursor(enabled);
        },
        
        setCSSEffects: function(enabled) {
                // enable or disable CSS effects on DOM container
                this.cssEffects = !!enabled;
        },
        
        receiveEvent: function(eventName, args) {
                // receive event from flash
                eventName = eventName.toString().toLowerCase().replace(/^on/, '');
                                
                // special behavior for certain events
                switch (eventName) {
                        case 'load':
                                // movie claims it is ready, but in IE this isn't always the case...
                                // bug fix: Cannot extend EMBED DOM elements in Firefox, must use traditional function
                                this.movie = document.getElementById(this.movieId);
                                if (!this.movie) {
                                        var self = this;
                                        setTimeout( function() { self.receiveEvent('load', null); }, 1 );
                                        return;
                                }
                                
                                // firefox on pc needs a "kick" in order to set these in certain cases
                                if (!this.ready && navigator.userAgent.match(/Firefox/) && navigator.userAgent.match(/Windows/)) {
                                        var self = this;
                                        setTimeout( function() { self.receiveEvent('load', null); }, 100 );
                                        this.ready = true;
                                        return;
                                }
                                
                                this.ready = true;
                                this.movie.setText( this.clipText );
                                this.movie.setHandCursor( this.handCursorEnabled );
                                break;
                        
                        case 'mouseover':
                                if (this.domElement && this.cssEffects) {
                                        this.domElement.addClass('hover');
                                        if (this.recoverActive) this.domElement.addClass('active');
                                }
                                break;
                        
                        case 'mouseout':
                                if (this.domElement && this.cssEffects) {
                                        this.recoverActive = false;
                                        if (this.domElement.hasClass('active')) {
                                                this.domElement.removeClass('active');
                                                this.recoverActive = true;
                                        }
                                        this.domElement.removeClass('hover');
                                }
                                break;
                        
                        case 'mousedown':
                                if (this.domElement && this.cssEffects) {
                                        this.domElement.addClass('active');
                                }
                                break;
                        
                        case 'mouseup':
                                if (this.domElement && this.cssEffects) {
                                        this.domElement.removeClass('active');
                                        this.recoverActive = false;
                                }
                                break;
                } // switch eventName
                
                if (this.handlers[eventName]) {
                        for (var idx = 0, len = this.handlers[eventName].length; idx < len; idx++) {
                                var func = this.handlers[eventName][idx];
                        
                                if (typeof(func) == 'function') {
                                        // actual function reference
                                        func(this, args);
                                }
                                else if ((typeof(func) == 'object') && (func.length == 2)) {
                                        // PHP style object + method, i.e. [myObject, 'myMethod']
                                        func[0][ func[1] ](this, args);
                                }
                                else if (typeof(func) == 'string') {
                                        // name of function
                                        window[func](this, args);
                                }
                        } // foreach event handler defined
                } // user defined handler for event
        }
        
};
